Hi Marco, Fabrice has already given you the correct hint: Wrapping your json elements with <json <json type='array'> should do the trick.
Anyway, thanks for the hint to the NullPointerException, this issue has been fixed. Cheers, Christian On Mon, Jan 23, 2017 at 9:31 AM, Marco Lettere <[email protected]> wrote: > Hello all, > > this morning just stumbled into this issue and I'm wondering whether it > could be somehow smoothed up ... > > I have the following RestXQ function: > > declare > %rest:path("/f") > %rest:GET > %output:method("json") > function a:f() { > (:code ...:) > }; > > 1) Replacing comment with the following code correctly returns an empty > object: > > let $out := (<json type="object"></json>) > return $out > > 2) Replacing comment with the following code correctly returns an expected > exception (" [SERE0023] Only one item can be serialized with JSON." : > > let $out := (<json type="object"></json>, <json type="object"></json>) > return $out > > 3) Replacing comment with the following code returns a somewhat less > expected Null-pointer exception : > > let $out := (<json type="object"></json>, <json type="object"></json>) > return array{$out} > > 4) In order to get the expected Json array I need to write the code like the > following: > > let $out := (<json type="object"></json>, <json type="object"></json>) > return array{ $out ! json:parse(json:serialize(.), map{ "format" : "map"}) > } > > I'm not sure whether the array could be inferred from the sequence directly > in a pattern like 2. But I would expect that 3) should work. Isn't it? > > Thanks for any explanation. > > Regards, > > Marco. >
